Flux pro 1.1 API

blackforestlabs/flux-pro-1.1
FLUX 1.1 [Pro] delivers rapid image generation with advanced features tailored for developers.
Output
$0.052 / gen (variable)
Released
Jun 12, 2026

How to use Flux pro 1.1 API

Install any OpenAI-compatible SDK, point it at api.aimlapi.com/v1, and set the model to blackforestlabs/flux-pro-1.1.
import requests

r = requests.post(
    "https://api.aimlapi.com/v1/images/generations",
    headers={"Authorization": "Bearer " + AIMLAPI_KEY},
    json={
      "model": "blackforestlabs/flux-pro-1.1",
      "prompt": "A cat holding a sign that says hello"
    },
)
print(r.json())
const r = await fetch("https://api.aimlapi.com/v1/images/generations", {
  method: "POST",
  headers: {
    Authorization: `Bearer ${process.env.AIMLAPI_KEY}`,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "model": "blackforestlabs/flux-pro-1.1",
    "prompt": "A cat holding a sign that says hello"
  }),
});
console.log(await r.json());
curl -X POST https://api.aimlapi.com/v1/images/generations \
  -H "Authorization: Bearer $AIMLAPI_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"blackforestlabs/flux-pro-1.1","prompt":"A cat holding a sign that says hello"}'

OpenAI-compatible — swap the base URL and it works with your existing SDK.

Flux pro 1.1 API Pricing

TypePrice
Input
Output
$0.052 / gen (variable)

Flux pro 1.1 vs other models

ModelInputOutputContextBest for
Flux pro 1.1
This page
$0.052 / gen (variable)
Image generation at scale
$0.325 / 1M tokens
$78 / 1M tokens
128K tokens
Image generation at scale
$6.5 / 1M tokens
$39 / 1M tokens
Image generation at scale
Image generation at scale
$0.0195 / MP (variable)
Image generation at scale

Frequently asked questions

Flux pro 1.1 takes image, text as input and returns image.

Flux pro 1.1 became available on June 12, 2026.

Flux pro 1.1 is priced at $0.052 / gen (variable).

Flux pro 1.1 is billed per generation — a fixed charge per output rather than by prompt length.

Yes, Flux pro 1.1 accepts image input as well as a text prompt.

Flux pro 1.1 was built by Black Forest Labs.

Send a request to https://api.aimlapi.com/v1/images/generations with blackforestlabs/flux-pro-1.1 as the model id.

Yes. Flux pro 1.1 is served through AI/ML API, so the same key and endpoint format used for other models applies.

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